A large stream of water flowing in a channel on land toward the ocean, a lake, or another river, larger than brook
RIVER
narrow ridge of fine particles of stone created by the current or tide
Sandbar
An extensive tract of land, mostly level, destitute of trees, and covered with tall, coarse grass
PRAIRIE
A long or continued range of hills or mountains, the upper part of such a range
Ridge
A place where water is collected and kept for use when wanted
Reservoir
A chain or range of rocks lying at or near the surface of the water.
REEF
Small fertile area in a desert, irrigated by natural springs or other source of fresh water
Oasis
A line of connected mountain ranges
Mountain Chain
A fast moving river current caused by a moderate descent
RAPIDS
a portion of land connected with a continent by a narrow neck or isthmus but nearly surrounded with water
Peninsula
Flat section of land higher than the surrounding area
PLATEAU
the top of a hill or mountain, ending in a point
PEAK
a tract of land overrun with heath; a marsh; a fen; ground covered with stagnant water
MOOR
A structure constructed perpendicular to the harbor for securing vessels and receiving goods unladen or to be shipped on board
PIER
Large area of flat land
PLAIN
The bottom of a mountain
PIEDMONT
A small collection of water in a hollow place, supplied by a spring and discharging its surplus water by an outlet, smaller than a lake
POOL
A small cape, headland, or promontory; a tract of land extending into the sea
POINT
An extensive open plain or meadow; a plain destitute of trees
Savanna
A gap in a mountainous area suitable for passing through; a means of passage through a rugged area
PASS